Name |
Ab. |
Features |
Working temp £¨ oC £© |
Main usage |
Nitrile-butadiene rubber |
NBR |
Excellent resistant to oil, heat and friction. Widely used in producing sealing products, but not suitable for meeting phosphate ester series hydraulic oil and gear oil with additive agent. |
-40 ¡« 120 |
Suitable for making O Ring, Oil seal used in normal hydraulic and pneumatic elements |
Rubber compound |
RP |
High elastic modulus and strength, with other properties similar with NBR |
-30 ¡« 120 |
Suitable for making O Ring, Y Ring , wiper used in engineering machine and high pressure hydraulic system. |
Fabric clip rubber |
FAB |
NBR plus fabric. High strength, good friction resistance, oil resistance poorer than NBR, other properties similar with NBR |
-30 ¡« 100 |
Used for making fabric clip seals, suitable for engineering machines, metallurgical equipments and high pressure system sealing |
Fluoroelastomer |
FKM |
Resistant to heat, acid, alkaline and other chemicals; resistant to oil (including phosphate ester series hydraulic oil), suitable for sealing in all lubricated oil, fuel, hydraulic oil and compound oil. |
-20 ¡« 200 |
Suitable for sealing in high temperature resistance, chemical resistance, flame resistance hydraulic oil. Widely used in industries such as metallurgy and electric power etc. |
Silicone Rubber |
PMQ or VMQ |
Excellent resistant to heat and cold. Small compression set, low mechanical strength |
-60 ¡« 230 |
Suitable for high speed rotating and food machine sealing |
Polyacrylate Rubber |
ACM |
Better heat resistance than NBR, poor water resistance; suitable for sealing in lubricated oil, hydraulic oil, petrol with additive agent. |
-20 ¡« 150 |
Suitable for various automotive oil seal , gear case and gear box. Resistant to mid/high temperature. |
Ethylene Propylene Diene |
EPDM
Or EPM |
Good weatherability, common ageing and oil resistance in atmosphere; resistant to freon and various coolant |
-50 ¡« 150 |
Suitable for refrigeratory and coolant machine sealing |
Polytetrafluoroethylene |
PTFE |
Good chemical stability, excellent resistant to heat, cold, oil, water, gas and chemistries, etc. high mechanical strength; excellent high pressure resistance, friction resistance; low friction coefficient, and good self-lubricated. |
-55 ¡« 260 |
Used for making abrasion ring, guide ring and halted ring; widely used sealing material for mechanical parts; widely used for metallurgy, petrifaction, engineering machine and light industrial machine |
Nylon |
PA |
Good resistant to oil, heat and friction; high tensile strength and impact strength, but poor size stability |
-40 ¡« 120 |
Used for making guide ring, back-up ring, pressure disk and halted ring |
Polyformaldehyde |
POM |
Good resistant to oil, heat and friction; high tensile strength and impact strength; good self-lubrication and size stability, but poor bending strength. |
-40 ¡« 140 |
Used for making guide ring and halted ring |
